Electromechanical power train system for an automotive vehicle

ABSTRACT

An electromechanical power train system for an automotive vehicle having a driving engine in which an electric generator driven by the engine for generating an electric energy for a battery and an electric drive motor for driving a propeller shaft are incorporated together with an electronic controller for controlling the operation of the constituted devices with speed reduction gear. The engine may be smaller for always operating at full throttle open for preventing the discharge of the detrimental exhausted gas.

United States Patent Yoichi Mori Inventor Yokohama, Japan Appl. No. 871,816 7 Filed May 29, 1969 Patented Nov. 30, 1971 Assignee Nissan Motor Company Limited Yokohama, Japan Priority May 31, 1968 Japan 43/372311 ELECTROMECI-IANICAL POWER TRAIN SYSTEM FOR AN AUTOMOTIVE VEHICLE I Claim, 30 Drawing Figs.

US. Cl 180/65 A,

290/15. 290/16 Int. Cl B60l 11/14 Field of Search 180/65 A;

[56] References Cited UNITED STATES PATENTS 968,290 8/1910 Thomas 290/10 1,284.664 1 H1918 Hamrick 290/16 1,410.276 3/1922 Stephenson 290/16 1.558.806 10/1925 Hess,.lr. 290/10 Primary Examiner-Benjamin Hersh Assistant Examiner-Milton L. Smith Allomey.1ohn Lezdey 34 ,33 ,32 THROTTLE CHARGED ENERGY BATTERY ACCELERATOR CONTROL DETECTOR CONTROL L 1 l r r GEN FIELD cURRENT MOTOR FIELD cURRENT -37 x CONTROLLER CONTROLLER I :,g l as j r l I GEN ARMATURE CURRENT MOTOR ARMATURE CONTROLLER CURRENT CONTROLLER I l ENGINE PAIENTEBunv 30 an SHEET 09 0F 22 INVENTOR Yam!) 1 A! BY rman PAIENTEBuuv 30 l97| sum 19 nr 2 nlllluml INVENTOR 

1. An electromechanical power train system for a vehicle comprising a drive shaft driven by the engine; a driven shaft to drive said vehicle; a planetary gear set having a sun gear; a plurality of planet gears; a carrier rotatably supporting said planet gears, and a ring gear; a DC storage source; a generator electrically connected to said storage source, said generator having a field and armature; a motor electrically connected to said storage source, said motor having a field and armature; a friction clutch having a first and second rotary portions; and friction brake having a rotary and stationary portions; said sun gear of said planetary gear set being connected to said armature of said generator and said second rotary portion of said friction clutch; said drive shaft being connected to said carrier of said planetary gear set; said ring gear of said planetary gear set being connected to said field of said generator and said first rotary portion of said friction clutch and said armature of said motor; said armature being connected to said driven shaft; said field of said motor being fast on the body of the vehicle; said driven shaft being connected to said rotary portion of said friction brake; said stationary portion being fast relative to the body of the vehicle, said generator serving to control said planetary gear set by maintaining the rotation difference between said armature and field thereof when the engine torque is larger than the traveling resistance whereby the engine power delivered from the engine will develop at said driven shaft while said storage source is charged from said generator, said motor being actuated by the electric current supplied from said storage source for imparting an additional motor torque on said driven shaft when the engine torque is smaller than the travelling resistance, said friction brake being engaged for parkiNg the vehicle, and said friction clutch being engaged for completing a direct drive through said planetary gear set. 